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Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)

Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is high...

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Autores principales: Kuznetsova, Valentina G., Maryańska-Nadachowska, Anna, Khabiev, Gadzhimurad N., Karagyan, Gayane, Krivokhatsky, Victor A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904352/
https://www.ncbi.nlm.nih.gov/pubmed/31844408
http://dx.doi.org/10.3897/zookeys.894.47040
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author Kuznetsova, Valentina G.
Maryańska-Nadachowska, Anna
Khabiev, Gadzhimurad N.
Karagyan, Gayane
Krivokhatsky, Victor A.
author_facet Kuznetsova, Valentina G.
Maryańska-Nadachowska, Anna
Khabiev, Gadzhimurad N.
Karagyan, Gayane
Krivokhatsky, Victor A.
author_sort Kuznetsova, Valentina G.
collection PubMed
description Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is highly variable, at least in the first two families. In the comparatively more fully explored family Myrmeleontidae, the species studied have three to several hundred follicles per testis, the dominant values being six and five. In Ascalaphidae, two main patterns were revealed: testes with a low number of follicles (six and twelve per testis) and testes with multiple follicles (several dozens). Moreover, differences in the follicle number were often observed both between males of the same species and different testes of a male. In Nemopteridae, considered a sister group to the [Myrmeleontidae + Ascalaphidae] clade, the testes in males were found to consist of six or five follicles each. This implies that a low number of follicles, most likely six, is an ancestral trait in Myrmeleontiformia. All other numbers are thus the derived traits and are probably due to a simple oligomerization or a simple polymerization, the latter process having been very intensive in the evolution of the suborder. Conversely, females were found to have ten ovarioles per ovary in each of the three families studied.
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spelling pubmed-69043522019-12-16 Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia) Kuznetsova, Valentina G. Maryańska-Nadachowska, Anna Khabiev, Gadzhimurad N. Karagyan, Gayane Krivokhatsky, Victor A. Zookeys Research Article Abstract. The representatives of the lacewing families Myrmeleontidae, Ascalaphidae, and Nemopteridae (the suborder Myrmeleontiformia) were studied with reference to the number of testicular follicles in males and the number of ovarioles in females. We have found that the number of follicles is highly variable, at least in the first two families. In the comparatively more fully explored family Myrmeleontidae, the species studied have three to several hundred follicles per testis, the dominant values being six and five. In Ascalaphidae, two main patterns were revealed: testes with a low number of follicles (six and twelve per testis) and testes with multiple follicles (several dozens). Moreover, differences in the follicle number were often observed both between males of the same species and different testes of a male. In Nemopteridae, considered a sister group to the [Myrmeleontidae + Ascalaphidae] clade, the testes in males were found to consist of six or five follicles each. This implies that a low number of follicles, most likely six, is an ancestral trait in Myrmeleontiformia. All other numbers are thus the derived traits and are probably due to a simple oligomerization or a simple polymerization, the latter process having been very intensive in the evolution of the suborder. Conversely, females were found to have ten ovarioles per ovary in each of the three families studied. Pensoft Publishers 2019-12-03 /pmc/articles/PMC6904352/ /pubmed/31844408 http://dx.doi.org/10.3897/zookeys.894.47040 Text en Valentina G. Kuznetsova, Anna Maryańska-Nadachowska, Gadzhimurad N. Khabiev, Gayane Karagyan, Victor A. Krivokhatsky Krivokhatsky http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Kuznetsova, Valentina G.
Maryańska-Nadachowska, Anna
Khabiev, Gadzhimurad N.
Karagyan, Gayane
Krivokhatsky, Victor A.
Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title_full Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title_fullStr Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title_full_unstemmed Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title_short Variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families Myrmeleontidae, Ascalaphidae, and Nemopteridae (Insecta, Neuroptera, Myrmeleontiformia)
title_sort variation in the number of testicular follicles and ovarioles among 18 lacewing species of the families myrmeleontidae, ascalaphidae, and nemopteridae (insecta, neuroptera, myrmeleontiformia)
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6904352/
https://www.ncbi.nlm.nih.gov/pubmed/31844408
http://dx.doi.org/10.3897/zookeys.894.47040
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